/** * Get the indexes that are affected by the reorder * @param from index of the item before reorder * @param to index of the item after reorder * @returns Map of from to to */ export function getAffectedIndexes(from: number, to: number) { const indexes = new Map() indexes.set(from, to) if (from < to) { for (let i = from + 1; i <= to; i++) { indexes.set(i, i - 1) } } else { for (let i = from - 1; i >= to; i--) { indexes.set(i, i + 1) } } return indexes }